Phonetic verifier



u 2, 9 1., G. TOWNSEND 2,284,694

PHONETICIVERIFIER Filed June 17, 1938 5 Sheets-Sheet 1 f ,fiwm I11INVENTOR Ana. TOWNSEND ATTORNEY June 2, 1942. g, fow I 2,284,694

PHONETIC VERIFIER Filed June 17, 19:58 5 Sheets-Shee t 2 o g e L. G.Town S51v0 ATTORNEY June 2, 1942. 1.. G. TOWNSEND 2,234,694

7 PHONETIC 3 VERIFIER' I Fil ed June 17; less 5 Sheets-Sheet s- INVENTORL. q=. raw/wszna ATTORNEY June 2, 1942.

L. G. TOWNSEND PHONETIOVERIFIER Filed J1me 17,1938

5 SheetS -Sheet 4 ww wmW INVENTOR 4.. 4. Town/Java ATTORNEY 5Sheets-Sheet 5 L. G. TOWNSEND PHONETIClVERIFIER Filed June 17, 1938 June2, 1942.

INVENTOR 4. TOWNSEND BY ATTORNEY Patented June 2, 1942 2,284,694rnom'zrrc (Emma Leonard G. Townsend, Washington, D. 0. Application June17, 1938, Serial No. 214,396

9 Claims. (01. ire-100.3)

(Granted under the' act of'Mar-ch 3, 1883, as

amended April 30, 1928; 370 O. G. 757) This invention relates to the artof verifying records such, for example, as' theperforate records on thecards used in machines for compiling with which atabulating machineoperates. A I.

' further objectionable feature of this type of veristatistical data andfor other businesspurposes.

There are several methods of verifying punched cards that are in commonuse today.

These methods may be classified, roughly, as con-' sisting of twogeneral types. In one general mode of procedure the verifying machine isused.

By this method the cards are .first punched from the original record andthen placed in a verifying machine; The operator then goes through allfication'is that'bythe use of two operators for checking. the paperrecord against the original.

records, a further opportunity for a multiplication of human error ispresented. However, this proof tabulation method has the decided advantage of greater speed and of subjecting the opere ators to less fatiguethan the other method which employs the verifying machine.

- The purposes of this invention are to provide for eliminatingthefatigue factor involved in the the motions of repunching the cards. Ifthe operator strikes a key on the verifier which does not correspond tothe key previously struck on a punching machine, the verifierautomatically indicates thepresenceof an error, usually by re fusing toskip, and the operator is thereby informed of a card .error.

The other general mode of procedure may be designated as the prooftabulation method. This consists of punching the cards from the originalrecords as in the first method, and then tabulating them, that is,listing each card on a paper record. This paper record is then employedin,

reading back its text against the original record.

Both of these general types of verification have certain disadvantages.When a verifying machine is used in the first method discussed herein,it'ls necessary for the operator to go. through the .mechanical motionsofrepunching the cards from the original documents. Fatigue, caused bythe constant necessity of correlating the sense method now used with theverifying machine and to provide for eliminating the necessity of anysecond operator or checker in the proof tabu-.

= lation method by substituting for this checker-a means capable offaster operation than the tabulator, .thereby eliminating thedisadvantages and retaining the principal advantages of the two methodspreviously discussed herein.

These desirable objectives may be attained inaccordance with the presentinvention by sensing a perforate record, such asa punched card,

- to determine the location of the perforations, and

ofv sight with that of muscular movement, no 1 matter how involuntarythis movement may have become through practice, is a highlyobjectionable factor of this type of verification. Thismethod is alsoparticularly unreliable from the standpoint of accuracy if the manualfeed type of machine is used, for, in this event, the operator iscompelled to remove her eyes from a particular line on the original.record in order to accomplish the act of ejecting the old card andfeeding in the new. On the other hand, it has been proven by actual testthat greater accuracy is obtained by the proof tabulation method thanwith the verifying machine as now used. It will be evident onexamination that this proof tabulation method also has itsdisadvantages. For instance, two operators are necessary for thechecking procedure. It is also necessary to provide a tabulated list ofthe punched cards before the checking operation may proceed. The prep- 7aration of such a list is necessarily a rather slow mechanical operatingconnections of relatively and laborious procedure due to the relativespeed operating sound mechanism preferably selectively in response tothe relative positions of the sensed perforations, so that the perforaterecordmay be read back-to the operator.

I The sound equipment may be adapted to enunciate the numeralsorother-characters corresponding to the position in each column of thesensed perforations, orthe sound reproduced may be in the form of aspoken statement giving information represented by the location on theperforate record of the sensed perforation. This general mode ofprocedure is less tiresome and less monotonous than those previouslyemployed, for it eliminates the muscular movements involved in theoldprocedure of. repunching a record and thereby relieves the operatorofthe fatigue resulting from such movements; it requires only one operatorand yet retains all the advantages of the dependable accuracyof theprior proof tabulation method; and the spoken words issuing from thesound mechanism have at least a tendency to keepthat operator morealert. I v

Accordingto another feature of the invention electro-mechanical meansfor advancing and for back spacing the carriage may" be mounted thereon.This makes it possible to-form the simple and yet comparatively ruggedand durable construction and eliminates the need for the ex-,

pensive and rather delicate connections of the prior art where, forexample, the operative me-" Fig. 2 is a top plan view of 'a control boxfor the machine shown in Fig. 1;

Fig. 3 is a vertical section through the machine shown in Fig. 1,illustrating the sensing means and the carriage associated therewith;

Fig. 4 is a section similar to Fig. 3, but taken in front of Fig. 3 forthe purpose of illustrating the error key which is movable with thecarriage and the associated die punches which are disposed in front ofthe sensing means for notching the edge of' a card to indicate thecolumn in which an error has occurred;

Fig. 5 is a bottom plan view of the carriage illustrated in F18. 3;-

Fig. 6 is a view in side elevation with parts omitted and broken awayillustrating sound mechanism;

Fig. '7 is a diagrammatic view illustrating the wiring connectionsreceivmg set and the sound equipment, parts being omitted and brokenaway for the purposes of illustration; and

' Fig. 8 is a plan view of the sound mechanism 1 shown in Fig. 6.

In the embodiment selected for illustration, a

verifying machine indicated generally at l0.

(Fig. 1) comprises a housing II which may be equipped with-a card rackl2 for a record card,

a and with a s ot l3 for the carriage escapement mechanism ,and a slotIt for an error punch key ll. Acard magazine l8 may also be mount-- edon the front of the housing. As shown in Fig. 3, this machine may beequipped with a traveling carriage I9 which is controlled by theescapement mechanism H which cooperates with a fixed rack 2|. Carriageand escapement mechanism'of this general type is well known in the artand is illustrated and described in the patents to: Welland et al. No.1,684,001, granted September 11, 1928 (Fig. 2) Lasker No. 1,305,557,granted June 3,1919 (Fig. '2); LaskerNo. 1,643,- 779, granted September27, 1927, (Figs. 1 and 2); Lasker No. 1,648,546, granted September 18,1928 -(Figs. 3 to 5); Lasker No. 1,798,610, granted March 31, 1931(Figs. 1 to 4) to all Of which reference may be had for a betterunderstanding of features of construction and the'principle and mode ofoperation of this carriage quipment.

In accordance with this invention, electromechanical means in the formof an auto-space magnet 22, a back space magnet 23, and mechanismcooperatingv with these magnets may be mounted upon the carriage. Asshown in Fig. 3, the escapement mechanism is operated by a verticallydisposed rod 24 which is connected at its upper end by means of apivotal connection 26 tothe escapement mechanism. This rod carries atits lower end an armature 21 disposed adiacentthe stationary core piece28 of the magnet.

It will be understood that when the magnet is "energized, the resultingattraction of the arma-' ture 21 moves the rod downwardly and therebyactuates the escapement mechanism to advance the carriage with a step bystep'motion as is well understood in the art.

with a stationary core piece 29 adapted to attract an armature 3|mounted upon the lower end of a vertically disposed rod 32, the upperendof which may be pivotally connected at 22 to one arm of a bell crank34 which is mounted to pivot on the carriage at 26. A contractile springl'l may be-connected to this leverage at any suitable point, as at thepivotal connection, the other end of this spring being, secured to thecarriage frame as shown so that the rod 32 is normally urged upwardly tospace the armature, carried thereby, from the core piece 22. The otheror depending arm of the bell crank is pivotally connected to a link awhich is pivotally connected to a horizontally dispose-(trod II, thelatter being slidably mounted in spaced bearing brackets 4| and 42mounted on the carriage frame. A pawl 42 may have a pivotal connection44 with the rod 3. This pawl may be provided. on its under side with acam surface 46 adapted to cooperate with a fixed pin or stop 41. The camsurface is yieldably held in engagement with the stop by means of acontractile spring 48 connected between the pawl and the carriage frame.The under side of the fixed rack 2| may be provided with a series ofratchet teeth 4! which the pawl 42 is adapted to engage.

It will. be seen from the foregoing, that when the back space magnet isenergized and the armature ll is attracted by the core piece 29, the

resulting downward movement of the rod 32 will swing the bell crank 34in a counter-clockwise direction as viewed in Fig. 3, and the link 28and the rod 39 will be 'moved to the right. This 'movement will causethe cam surface 46 of the a pawl to ride upwardly over the sto swingingthe pawl into engagement ith one of 41, thereby the ratchet teeth. Itwill be understood that the pawl and the ratchet teeth are soproportioned andarranged that, during the early or initial partof themovements just described, the pawl engages one of the ratchet teeth, andas the movement is completed, the engagement of the pawl with a fixedratchet'tooth causes the carriage to be pulled to the left, as viewed inFig. 3, a distance corresponding to the spacing of the ratchet teeth, orin other words, the carriage is 1 back spaced." It will be evident thatthis operation may be repeated as desired.

The sensing mechanism is indicated generally by the reference character5| in Fig. 3. This mechanism comprises a series of aligned extensionpins 52 mounted in fixed frame members 52 and 54. Preferably each ofthese pins carries a v relatively light' coil spring 56 which seatsagainst the frame member 54 and against a sho 1 carried by each pin. Thepurpose 0 51 182: :prilhgs is to exert a gentle downward pressure on acpm so as to do away with an ten the pins to stick in their upper orpzojeci b eii tions. With the exception of the springs 56 thesealignedextension pins 52, their cooperative relationship with the throator passage for a card or other perforate record, and the mechanism forsensingv a card or like record may be identical with that disclosed andindicated particularly by the reference characters to 2| inclusive inFig 9 of the patent to Powers No. 1,245,504, granted November 6, 1917,to which reference may be had for a' better understanding offeatures ofconstruction, the principle and the mode of operation of the'sensingmechanism. which are not designated in flyaa b specifically disclosed.herein. Reterence is also made to like sensing mechanism and operatingmeans therefor as disclosed in the patent to Powers No. 1,245,502,granted November 6, 1917 (Figs. '6, 7 and 8), and to the Lasker PatentsNo.

1,730,513, granted October 8, 1929 (Fig. .1), and

No. 1,780,621, granted November 4, 193011 18. 1).

Independently operable means comprising a series of normally. openswitches GI may be mounted on the under sideoi the carriage (Fig.

5) in'cooperative relation with the aligned extension pins 52 (Fig. 3).

switches corresponds with the spacing of the The spac n o these alignedextension pins for'each column oidigits or other characters on the card'or' other record to be sensed. Each switch may comprise a fixed arm 62carrying a contact "and azspringxarm 64 carrying a contactor G6whichisengageable with the contact 83 for 'completingtlie circuit atthis point as illustrated in Fig. 3. The fixed and spring arms of eachswitch are mountedin an insulator block 61 which is secured to thecarriage by suitable attaching elements, such as the screws 68 (Fig. 5).The lower or spring arm 68 of. each switch'may have its outer end bentor curved downwardly to provide a cam surface 68 (Fig.5) for engagementwith the ends oi those aligned extension pins'which. are projected bythe sensing, mechanism as illustratcd'in Fig. 3.

Means for producing sound may comprise.

.sound equipment of any suitable type, but preferably this meanscomprises a plurality of photographic films I5 and 16 having soundtracks V I1 and I8 (Fig; 8)l prepared thereon in a manner familiar tothe art of talking pictures.-

A these films and the parts associated therewith. are arranged inidenticallythe same manner,

- only the film I5 and equipment associated there-.

speaker'or with ear phones I" as shown. It will also beseen from Fig. 'Ithat electrical energy for operating the motor may be supplied through acircuit I88 which is controlled by a suitable switch m.

Electrical energy for "-2. From the line III a conductor II8 leads totheeject magnet 8;. A conductor IIG leads from this magnetto one terminalof a normally open switch III which is adapted to be closed by pressingdown a key II8. A conductor II! leads Irom'the other'terminal ofthisswitch to the line II2.

The circuit for the back space magnet 23 may comprise a conductor I2Ileadingiromline III to one terminal of the magnet, a conductor I22.extending between the other terminal of'the magnet and one terminal of anormally open' switch I23 which is adapted to be closed by depressing anoperating key I24. Fromthe other terminal of this switch a conductor I26extends to the line I I2.

The circuit for the auto-space magnet 22 may comprise a conductor I21extending between the line III and one terminal of the magnet and aconductor I28 extending between the other terminalfof the magnet andthrough one or the other of parallellcircuits, hereinafter described,

and then to the line I I2. A normally open switch I29 has one terminalconnected to the conductor I21 and the other terminal thereof connected.to the conductor I28. This switch is adapted to' be closed bydepressing a key I3I. This switch a may be releasably held in closedposition by a with are described in detail herein, but the cor-' Iresponding parts associated with the film 16 are the drawings by thesame refer ence characters bearing prime marks.

r The film I5 is an endless film which'is trained over idler guidesprockets 18, 8|, 82 and 83 and over a driving sprocket 84. The portionof the film extending between the idler sprockets I8- and 83 passesbetween a light bulb 88 and a photo-electric cell-81. .Thecooperativearrange merit of a light bulb and a photo-electric cell forreproducing sound from a sound track on .a -film passing therebetween iswell understood in the art, and therefore, iurther description of thisarrangement and the adjunctive features for the practical applicationthereof is deemed unneccessary herein.

Preferably the driving sprockets 88 and 8.4

for the films'IS and I6 respectively, are-mounted upon a common shaft,such as the shaft 88 uponwhich a bevel gear 89 is fixedlysecured. Abevel gear BI, which meshes with gear 89; may. be fixedly mounted on thearmatureshaft 82 of a driving motor 93-. This armature shaft may also beprovided with a worm 9| whichmeshes with a worm wheel 96.- A Geneva stopmotion may be I operatively associated with this worm wheel and as shownthis motiohcomprises apin81mounted orr'the worm wheel and cooperatively.associated with a Geneva gear 98 which is fast on a shaft 89 uponwhich'contact drums I8I "and I82 are also fixedly secured in suitablyspaced relation.

As shown in Fig.7, the photo-electric cells 81 and 81; are electricallyconnected 'by meansor ":1 circuits- I83 and I84 respectively, withamplification unitlflii of any suitable type. This am- 'plifl'cationunit may be provided with a loud latch I32 formed on one arm of a bellcrank I33. The arrangement is such that when the upper arm of the switchI28 is depressed, it is engaged and held in this position, in which theswitch is closed, by the latch. A depressable key I34 may be providedfor engaging the other arm of the bell crank to releasethe latch whendesired.

It will be evident that the bell crank may be balanced to maintain thelatch normally in a cooperative relation'with the upper arm of theswitch or suitable resilient means, such as one or more springs (not.shown) may be provided for this purpose.

'The normally open switches fil (Figs. 3; 4 and 5) constitute thecarriage contact. assembly.

' The contacts 63 and 68 of each of these switches C -8, respectively.Contact drum I8I maybe are represented. diagrammatically in Fig. 7 asdisposed in independent circuits extending be tween the conductor I28and the contact drums IM and I82. The contacts 63 of these switches maybe individually connected to the conductor C--9, respectively. Thecontacts 66 of these switches may brushes BI2, BII, 3-8, Bl, 13-2, 3-3,3-4; 3-5, Bj8, B--1, B8 and B8, by conductors C'-l2, C'II, C'--8, C'-I,'C'--2, C'- 3, C-4,' C5, C-6, C--'I, C' -8 and provided. with helicallyspaced contact segments SI2,,S-II, S- -8, SI, 8-2, and S3, which areindividually engageable in succession with the S-|, S-5, 8- -6, 'S- I, Hand 8-9 which are individually engageable in succession with the brushes.of the series 3- -4 to 13-9 inclusive.

the electro-mechanical equipment, the timing and selective control cir-',cuits, may be supplied from thelines III and be individually connectedto brushes of the series BI2 to B3 inclusive; In a like manner contactdrum I82 may be 'provided with ,helically spaced contact segments All ofthe segments SI2'to 8-3 inclusive of drum IIII may be electricallyconnected to a ring contact I36 carried by the drum. Similarly all ofthe segments 8-4 to 5-9, inclusive,'may be electrically connected to aring contact i371 carried by the drum I02. The drums I66 and I02 are somounted uponthe shaft 99 and the segments 8-42 to 5-9, inclusive, are sospaced about these drums that only one of these segments may engage oneof the brushes B-i2 to 3-9, inclusive, at any position of the drums.

The circuit for the light bulbv 86 may comprise a brush I33 engaging thering contact ass, a conductor I39 extending between this brush and oneterminal of the light bulb and a conductor I4I extending between theother terminal of the light bulb and the line H2. Similarly the circuitfor the light bulb 86 may comprise a brush I42 engaging the ring contactI31 of drum I02, a conductor I43 extending between this brush and oneterminal of the'light-bulb and a conductor I44 which extends between theother terminal of the light bulb and conductor I which leads to line H2.

It will be observed that the circuits just described for the light bulbs86' and 86' are parallel circuits extending between the conductor I28,

which is connected to one terminal of the autospace magnet, andconductor I which extends to line I I2. When the switch I29 is open andone or the other of these parallel circuits is completed as justdescribed, it will be seen that the auto-space magnet will be energized,armature 21 will be attracted to the core piece 28 and rod 24 will bemoved downwardly. This movement causes pawl Iil to be disengaged fromthe escapement wheel I52 and pawl I53 will engage a tooth of thisescapement wheel without allowing appreciable rotary movement of thelatter. The

parts remain in this condition while the pin 91 travels from one of therecesses in the Geneva aasaees Fig. 2. A switch 141 may also be mountedin the control box for controlling the sound mechanism in a manner wellunderstood in the art;

This control box may be equipped with a repeat key It", an auto spacekey I36 (Fig. 7), a back space key I24 (Fig. 7), a skip key I49 and aneject key II 8 (Fig. '7). The names of these keys sufllciently indicatetheir functions which are well known in the art and therefore, furtherdescription is deemed unnecessary.

In using this apparatus, the motor switch I89 in Figs. 2 and 7 is closedso that the motor 93 may operate continuously. The films l5 and 16 are,oi course, previously adjusted so that the portions of the sound trackon the film it, which are adapted to cooperate in the reproduction ofdistinguishable sounds informative of the positions in the card columnof-sensed perforations representing digits of series I2 to 3, inclusive,will register successively'with the lamp 855 and photo-electric cell 8'!simultaneously with engagement of corresponding brushes B-IZ to 3-3,inclusive, and the segments S-I2 to 8-3, inclusive. The film I6 islikewise-adjusted so that the portions of the sound track on this film,which are adapted to cooperate in the reproduction of distinguishable,sounds informagear 98 into the succeeding recess of this Geneva thecircuit through the auto-space magnet at the contact drums. When thisoccurs the autospace magnet is deenergized, rod24 is moved upwardly by aspring and as the pawls I5I and I53 swing free, the carriage is moved tothe right as viewed in Fig. 2 by a pull cord I54 a distance of onecolumn where it is stopped by engagement of pawl I5I with the escapementwheel. This step advance movement of the carriage moves the particularswitch 6|, which had been closed, from above the particular projectedaligned extension pin 52 which had held .this switch closed so thisswitch opens automatically.

'Therefore, no further advance of the carriage circuit may be in thiscontrol box as shown in tive of the positions in the card column ofsensed perforations representing digits of the series 4 to 9, inclusive,will register successively with the light bulb and the photo-electriccell 8'! when the brushes 3-4 to B9, inclusive, register with thesegments 8-4 to S9, inclusive. Cards. or like perforate records to besensed, may be fed to the sensing mechanism, indicated generally inFigs. land 3, in a manner familiar to the art, and fully disclosed inthe patents to Lasker and to Powers, previously identified herein.

The sensing mechanism functions in the usual manner, and whereperforations occur in a col- 1 I umn or columns of a card the alignedextension pins 52 (Fig. 3) are projected upwardly into the path of thecarriage contact assembly comprising the normally open switches SI ofFigs. 3 to 5. The carriage is adapted'to be advanced across the sensingmeans with an intermittent, stepby-step advance as previously describedherein.

When it is desired to cause the carriage to remain over a particularcolumn for the purpose of causing a repetition of the enuneiation of thesound mechanism for a particular column position to I occur, the switchI29 is closed, thereby shorting space magnet 22, thus precluding furtheradvance of the carriage while the sound mechanism continues to functionupon each complete circuit of the sound film. The switch I29 may beclosed by depressing key I3I, and when this key is so depressedit isheld in this position by the latch I32 until the latter is released bydepressing the automatic space key I34, which restores the-automaticspacing function of the carriagaj" If for any reason it shouldbedesired' to back space the carriage one or more columns, this may beaccomplished by depressing the back space key toenergize the back spacemagnet 23 and, as previously explained herein, to cause thepawl 43 toengage one of the ratchet teeth 49 thereby pulling the carriage to theleft, as viewed in i As the carriage advances to a position in which thenormally open switches 6| are in cooperative relation with thealignedextension pins 52 for that, particular column, it will be evident thatone or more of the pins in this column which are operation serves asprojected to their upper positions will be effective to engage thecurved end portions. of the lowerarm 64 of these switches; therebyforcing these arms upwardly to close the contacts 03 and i. of theparticular switches so engaged. This a selecting means for determiningwhich portion or portions of the sound tracks are to be renderedeffective for en'unciatin distinguishable sounds, such as the digitscorresponding to the column position of the perfora tions in the card tobe sensed. As'thefilnis I5 and 16 which carry the sound tracksareoperating continuously, timing means in the form of I02 serve todetermine perforation sensed in that particular column corresponds tothe number digit position, the switch 8! corresponding to this positionwill be closed and the circuit will be completed from con ductpr I28(Fig. .7) through the conductor 0-! I, throughthe switcinponductor C'-Hto brush B-l I; and when the difinfi'll-hhawtated to a position to bringengagement with the brush B-l I, the

the ring contact E36, brush I38, conductor I39, to the lamp 86, and thentothecon'ductor' 1 l2. It will be understood that when the circuit iscompleted through the lamp 86, the portion'of the sound track passingthis source of light will influence the photo-electriccell Bl to causethe proper sound or numeral eleven"-to be enunciated in the loudspeaker.

(not shown) or in the ear phones Hi1 of the amplification unit.Likewise, ii the perforation sensed in a card corresponds tothe number Idigit-position, for example, the engagement of the corresponding alignedextension pin 52 with the curved outer end 69 of the correspondingswitch Bl will complete a circuitfrom conductor I28 through conductorC-I, through the switch,

conductor C'-1, brush B--'l; and when thedrum I02 has rotated to aposition to bring contact segment S-l into engagement with brush B--I acircuit is then completed from. this contact segment to the ring contactl3l, thence through brush M2, conductor 3, light bulb 86, conductorilk-conductor Ill, to conductor H2. In

this instance the numeral seven may be enunciated by the soundequipment, and so on.

It will also be notedfrom Figs. 6 and 7 that the contact drums IM andI02 which are mounted upon shaft 99 of the Geneva gear 98 are givenrequired for the film carrying the portion ofthe soundtrackcorresponding to the sensed digit position to arrive between thelamp bulb and the photo-electric cell. While only two of these filmshave been shown, it will be apparent that the number of films may beincreased for this same purpose if desired. If the operator for anyreathe contact segment S==i-Linto through conductor Ill an intermittentrotary motion 'due to this Geneva stop movement. This intermittentmotion is so arranged as to bring each contact segment of each drumdirectly into-cooperative relation with the corresponding brush providedfor engagement with such segment. It will be clear, therefore, that insensing a particular perforation on a card, portions of both soundtracks representing several different digit positions may pass betweenthe lamp bulbs 86, 86' andv the photoelectric cells 81 and. 81' withoutproducing any sound because the circuit through these lamp bulbs is notcompleted until the proper segment on one of the drums has been broughtinto electrical contact with the brush which completes the circuitthrough one or the other of the lamp bulbs. It is therefore advantageousto provide a plurality of sound tracks as this reduces the time sondesires :to discontinue the sound, it is only necessary to open theswitch H1 in the control box (Fig. 2). It will also beunderstood thatthe operator'may manipulatethe keys l3l, I34, 124, I49 andl l8 as may berequired in the usual operation of an apparatus of this general type.

The invention, described herein, if patented, may be manufactured andused by or for the Government for governmental purposes without thepayment to me of any royalty thereon.

I claim:

1. In a verifier of the class described, the combination of one or moretravelling sound tracks having difierent portions thereof adapted toproduce distinguishable sounds substantially correspending in number tothe number of digit po'siv ticnsln a column of a card to be verified,means cooperable with said one or more sound tracks for producing sound,electrical means comprising dif-' i'erent circuits for controlling theproduction of circuit said distin uishable sounds means f in then becompleted from this contact segment to g or sens g a perforated card, acarriage adapted to travel across said sensing means, timingmeansfoncompleting each of saideircuits in timed relation with thetravel of said one or more sound tracks, and switches movable with saidcarriage and operable selectively by said sensing means for determiningwh ch of said circuits isto be completed.

2. In a verifier of the class described the combination .of one or moretravelling sound tracks having different portions thereof adapted toproduce distinguishable sounds substantially corresponding in number tothe number of digit posimeans for completing each of said circuits intimed relation with the travel of said one or' more sound tracks, andswitches mounted upon said carriage andoperable selectively by saidsensing means for determining which of said circuits is to be completed.

. 3. In a card verifier of the class described, the

combination of one or more sound tracks each having succeeding portionsthereof adapted to produce sounds each distinguishable from the other soas to provide for producing a total numher of such sounds substantiallycorresponding to the number of digit positions in a column of .a card tobe verified, means cooperable with said one or more sound tracks forproducing sound, independently operable means disposed on one side of acard to be verified, each of said independently operable means beingoperable for controlling the.

production of sound over a different one of said succeeding portions ofsaidone or more sound tracks, and-sensingmeans disposed on'the otherside of a cardto be verified and operable at perforations in a cardbeing verified for selectively actuating said independently operablemeans.

4: In a card verifier of the class described, thecombinatiomgifgmugmoresoundgigacks each ,t ,..l-- -r-having"sficceedingportions thereof adapted; to

produce sounds each distinguishable from the other so as to provide forproducing a total number of such sounds substantially corresponding tothe number of digit positions in a column-of a card to be verified,means cooperable with said one or more sound tracks for producing sound,independently operable switches disposed on one side of a card to beverified, each of said switches being operable for controlling theproduction of sound over a different one of said succeeding portions ofsaid one or more sound tracks, and sensing means disposed on the otherside of a card to be verified and operable at perforations in a cardbeing verified for actuating said switches.

5. In a card verifier of the class described, the

W combipation of onefisr'morrtravelling. sound tracks each havingsucceeding portions thereof adapted to produce sounds eachdistinguishable from the other so as to provide for producing a totalnumber of such sounds substantially corresponding to the number of digitpositions in a column of a card to be verified, means cooperablewithsaid one or more sound tracks for producing sound, electrical meanscomprising circuits for controlling the production of each of saiddisaaaaeaa 7. in a card verifier of the class described, the combinationof one or more travelling sound tracks each having succeeding portionsthereof adapted to produce sounds each distinguishable from the other soas to provide for producing a total number or such sounds substantiallycorresponding to the number of digit positions in the column of a cardto be verified, means cooperable with said one or more sound tracks forproducing sound, timing means including intermittently operable meansfor establishing normally open circuits in properly timed relation withthe travel of'saidsound tracks, sensing means disposed on one sideoFaYard-teicegerlifignd comprising sensing elements operable atperforfiiohsthereofr and means disposed entirely on the other side of acard to be verified and responsive to the projection of sensing elementsat perforations in said card for completing a circuit established by thetiming means to cause the production of a ing the position of theperforation at'which the sensing element projects.

8.111 acard verifier of the class described, the combination of sensingmeans comprising sensing elements disposed on one side of a card to beverb;

deaf said fled and projectable from the other card atperforationstlpereofaacarriage adapted to traverse saidsensihg meansalong said other side tinguishable sounds, sensing means comprising ofjigdear d, means for producing distinguishable sensing elements operableat perforations of a card being verified, timing meansfor coordinigngthe completion of said circuits with thentravel of u said sound tracks.and meansrespinsive concurrently to said timing E6836 and to theprojection of sensing e lement's at perforations in a card beingverified for completing a circuit to cause the --"'production of a sounddistinguishingthe position with said one or more sound tracks forproducing 50 sound, timing means including intermittently operable meansfor establishing normally open circuits in properly timed relation withthe travel of said sound tracks, sensing means comprising sensingelements operable at perforations of a 55 card being verified, and meansresponsive to the projection of sensing elements at perforations in acard being verified for completing a circuit established by the timingmeans to cause the production of a sound identifying the position of the60,

perforation at which the sensing element projects.

' unds substantially corresponding in number to the number of digitpositions in a column of said card, means providing electrical circuitsfor con trolling the production of said distinguishable sounds, andswitches movable with the carriage along said other side of said cardfor controlling said circuits in response to engagement with sensingelements'projecting at perforations of said card. 9. In a card verifierof the class described, the combination of one or: more travelling soundtracks each having succeeding portions thereof adapted to produce soundseach distinguishable fromthe other so as to provide for producing atotal number of such sounds substantially corresponding to the number ofdigit positions in a column of a card to be verified, means cooperablewith said one or more sound tracks for producing sound, independentlyoperable means disposed on one side of a card to be verified forcontrolling the production of sound over each of said succeedingportions of said one or more sound tracks, timing means for renderingsaid independently operable means eifective in properly timed relationwith the travel oi said one or more sound tracks, and sensing meansdisposed on the other side of a card to be verified and operable atperforations therein for selectively actuating said independentlyoperable means.

LEONARD G. TOWNSEND.

sound identifyg

